In the midst of crying their eyes out, sharp-eyed netizens spotted a mistake in one of the episodes of MBC’s I Miss You.

In Episode 8 aired on November 29, there was a scene where Han Jung Woo (Park Yoo Chun) hopped into an elevator, while chasing after Lee Soo Yeon (Yun Eun Hye). But when Park Yoo Chun stopped the elevator doors from closing, a mysterious man was seen, reflecting off the elevator door.

It turned out to be one of the staff members who were filming the scene.

After seeing the mistake, netizens commented, “I wonder how many people are riding that small elevator,” “A special appearance by the camera director,” and “I didn’t even notice while watching the show.”